Speaker
Gavril Giurgiu
(Johns Hopkins)
Description
CDF presents improved bounds on the CP-violating phase beta_s and on the decay-width difference DeltaGamma_s of the neutral B0_s meson system. We use 6500 B0_s --> J/psi phi decays collected by the dimuon trigger and reconstructed in a sample corresponding to 5.2 fb^{-1} of data. Besides exploiting a two-fold increase in statistics with respect to the previous measurement, several improvements have been introduced in the analysis including a fully data-driven flavor-tagging calibration and proper treatment of possible S-wave contributions.
Primary author
The CDF Collaboration
(Fermilab)
